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show interfaces (M-series and T-series Management and Internal Ethernet)

Syntax

show interfaces fxp(0 | 1)
<brief | detail | extensive | terse>
<descriptions>
<media>
<snmp-index snmp-index>
<statistics>

Release Information

Command introduced before JUNOS Release 7.4.

Description

(M-series and T-series routing platforms only) Display status information about the management Ethernet (fxp0) and internal Ethernet (fxp1) interfaces.

Options

fxp(0 | 1) — Display standard information about the management Ethernet or internal Ethernet interface, respectively.

brief | detail | extensive | terse — (Optional) Display the specified level of output.

descriptions — (Optional) Display interface description strings.

media — (Optional) Display media-specific information.

snmp-index snmp-index — (Optional) Display information for the specified SNMP index of the interface.

statistics — (Optional) Display static interface statistics.

Required Privilege Level

view

List of Sample Output

show interfaces brief (Management Ethernet)
show interfaces (Management Ethernet)
show interfaces detail (Management Ethernet)
show interfaces extensive (Management Ethernet)
show interfaces brief (Management Ethernet)
show interfaces (Internal Ethernet)
show interfaces detail (Internal Ethernet)
show interfaces extensive (internal Ethernet)

Output Fields

Table 147 lists the output fields for the show interfaces (management) command on the M-series and T-series routing platforms. Output fields are listed in the approximate order in which they appear.

Table 147: M-series and T-series Management and Internal Ethernet show interfaces Output Fields

Field Name

Field Description

Level of Output
Physical Interface 

Physical interface

Name of the physical interface.

All levels

Enabled

State of the interface. Possible values are described in Enabled Field

All levels

Interface index

Physical interface index number, which reflects its initialization sequence.

detail extensive none

SNMP ifIndex

SNMP index number for the physical interface.

detail extensive none

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive

Type

Type of interface.

All levels

Link-level type

Encapsulation type used on the physical interface.

All levels

MTU

Maximum transmission unit (MTU)—Size of the largest packet to be transmitted.

All levels

Clocking

Reference clock source of the interface.

All levels

Speed

Network speed on the interface.

All levels

Device flags

Information about the physical device. Possible values are described in Device Flags.

All levels

Interface flags

Information about the interface. Possible values are described in Interface Flags.

All levels

Link type

Data transmission type.

detail extensive none

Link flags

Information about the link. Possible values are described in Link Flags.

detail extensive

Physical info

Information about the physical interface.

detail extensive

Hold-times

Current interface hold-time up and hold-time down. Value is in milliseconds.

detail extensive

Current address

Configured MAC address.

detail extensive none

Hardware address

Media access control (MAC) address of the interface.

detail extensive none

Alternate link address

Backup link address.

detail extensive

Last flapped

Date, time, and how long ago the interface went from down to up. The format is Last flapped: year-month-day hour:minute:second timezone (hour:minute:second ago). For example, Last flapped: 2002-04-26 10:52:40 PDT (04:33:20 ago).

detail extensive none

Input packets

Number of packets received on the physical interface.

None specified

Output packets

Number of packets transmitted on the physical interface.

None specified

Statistics last cleared

Time when the statistics for the interface were last set to zero.

detail extensive

Traffic statistics

Number and rate of bytes and packets received and transmitted on the logical and physical interface.

  • Input bytes, Output bytes—Number of bytes received and transmitted on the interface.
  • Input packets, Output packets—Number of packets received and transmitted on the interface.

detail extensive

Input errors

  • Errors—Input errors on the interface.
  • Drops—Number of packets dropped by the output queue of the I/O Manager ASIC.
  • Framing errors—Number of packets received with an invalid frame checksum (FCS).
  • Runts—Frames received smaller than the runt threshold.
  • Giants—Frames received larger than the giant threshold.
  • Policed Discards—Frames that the incoming packet match code discarded because they were not recognized or were not of interest. Usually, this field reports protocols that JUNOS does not support.
  • Resource errors—Sum of transmit drops.

extensive

Output errors

  • Carrier transitions—Number of times the interface has gone from down to up. This number does not normally increment quickly, increasing only when the cable is unplugged, the far-end system is powered down and then up, or another problem occurs. If the number of carrier transitions increments quickly, possibly once every 10 seconds, the cable, the remote system, or the interface is malfunctioning.
  • Errors—Sum of outgoing frame aborts and FCS errors.
  • Drops—Number of packets dropped by the output queue of the I/O Manager ASIC. If the interface is saturated, this number increments once for every packet dropped by the ASIC RED mechanism.
  • Resource errors—Sum of transmit drops.

extensive

Logical Interface 

Logical interface

Name of the logical interface

All levels

Index

Logical interface index number, which reflects its initialization sequence.

detail extensive none

SNMP ifIndex

Logical interface SNMP interface index number.

detail extensive none

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive

Flags

Information about the logical interface; values are described in Logical Interface Flags.

All levels

Encapsulation

Encapsulation on the logical interface.

detail extensive none

inet

IP address of the logical interface.

brief

Protocol

Protocol family configured on the logical interface (such as iso or inet6).

detail extensive none

MTU

MTU size on the logical interface.

detail extensive none

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive

Route table

Route table in which this address exists. For example, Route table:0 refers to inet.0.

detail extensive

Flags

Information about the protocol family flags. Possible values are described in Family Flags.

detail extensive none

Addresses, Flags

Information about address flags. Possible values are described in Addresses, Flags.

detail extensive none

Destination

IP address of the remote side of the connection.

detail extensive none

Local

IP address of the logical interface.

detail extensive none

Broadcast

Broadcast address.

detail extensive none

Generation

Unique number for use by Juniper Networks technical support only.

detail extensive

Sample Output

show interfaces brief (Management Ethernet)

user@host> show interfaces fxp0 brief 
Physical interface: fxp0, Enabled, Physical link is Up
  Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Clocking: Unspecified,
  Speed: 100mbps
  Device flags   : Present Running
  Interface flags: SNMP-Traps

  Logical interface fxp0.0 
    Flags: SNMP-Traps Encapsulation: ENET2
    inet  192.168.70.143/21

show interfaces (Management Ethernet)

user@host> show interfaces fxp0 
Physical interface: fxp0, Enabled, Physical link is Up
  Interface index: 1, SNMP ifIndex: 1
  Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Speed: 100mbps
  Device flags   : Present Running
  Interface flags: SNMP-Traps
  Link type      : Half-Duplex
  Current address: 00:a0:a5:56:01:89, Hardware address: 00:a0:a5:56:01:89
  Last flapped   : Never
    Input packets : 80804 
    Output packets: 1105

  Logical interface fxp0.0 (Index 2) (SNMP ifIndex 13) 
    Flags: SNMP-Traps Encapsulation: ENET2
    Protocol inet, MTU: 1500
      Flags: Is-Primary
      Addresses, Flags: Is-Preferred Is-Primary
        Destination: 192.168.64/21, Local: 192.168.70.143,
        Broadcast: 192.168.71.255

show interfaces detail (Management Ethernet)

user@host> show interfaces fxp0 detail 
Physical interface: fxp0, Enabled, Physical link is Up
  Interface index: 1, SNMP ifIndex: 1, Generation: 0
  Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Clocking: Unspecified,
  Speed: 100mbps
  Device flags   : Present Running
  Interface flags: SNMP-Traps
  Link type      : Half-Duplex
  Physical info  : Unspecified
  Hold-times     : Up 0 ms, Down 0 ms
  Current address: 00:a0:a5:56:01:89, Hardware address: 00:a0:a5:56:01:89
  Alternate link address: Unspecified
  Last flapped   : Never
  Statistics last cleared: Never
  Traffic statistics:
   Input  bytes  :              6484031
   Output bytes  :               167503
   Input  packets:                81008
   Output packets:                 1110

  Logical interface fxp0.0 (Index 2) (SNMP ifIndex 13) (Generation 1)
    Flags: SNMP-Traps Encapsulation: ENET2
    Protocol inet, MTU: 1500, Generation: 6, Route table: 0
      Flags: Is-Primary
      Addresses, Flags: Is-Preferred Is-Primary
        Destination: 192.168.64/21, Local: 192.168.70.143,
        Broadcast: 192.168.71.255, Generation: 1

show interfaces extensive (Management Ethernet)

user@host> show interfaces fxp0 extensive 
Physical interface: fxp0, Enabled, Physical link is Up
  Interface index: 1, SNMP ifIndex: 1, Generation: 0
  Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Clocking: Unspecified,
  Speed: 100mbps
  Device flags   : Present Running
  Interface flags: SNMP-Traps
  Link type      : Half-Duplex
  Physical info  : Unspecified
  Hold-times     : Up 0 ms, Down 0 ms
  Current address: 00:a0:a5:56:01:89, Hardware address: 00:a0:a5:56:01:89
  Alternate link address: Unspecified
  Last flapped   : Never
  Statistics last cleared: Never
  Traffic statistics:
   Input  bytes  :              6678904
   Output bytes  :               169657
   Input  packets:                83946
   Output packets:                 1127
  Input errors:
    Errors: 12, Drops: 0, Framing errors: 0, Runts: 0, Giants: 0,
    Policed discards: 0, Resource errors: 0
  Output errors:
    Carrier transitions: 0, Errors: 0, Drops: 0, MTU errors: 0,
    Resource errors: 0

  Logical interface fxp0.0 (Index 2) (SNMP ifIndex 13) (Generation 1)
    Flags: SNMP-Traps Encapsulation: ENET2
    Protocol inet, MTU: 1500, Generation: 6, Route table: 0
      Flags: Is-Primary
      Addresses, Flags: Is-Preferred Is-Primary
        Destination: 192.168.64/21, Local: 192.168.70.143,
        Broadcast: 192.168.71.255, Generation: 1

show interfaces brief (Management Ethernet)

user@host> show interfaces fxp1 brief 
Physical interface: fxp1, Enabled, Physical link is Up
  Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Clocking: Unspecified,
  Speed: 100mbps
  Device flags   : Present Running
  Interface flags: SNMP-Traps

  Logical interface fxp1.0 
    Flags: SNMP-Traps Encapsulation: ENET2
    inet  10.0.0.4/8      
    inet6 fe80::200:ff:fe00:4/64
          fec0::10:0:0:4/64
    tnp   4

show interfaces (Internal Ethernet)

user@host> show interfaces fxp1 
Physical interface: fxp1, Enabled, Physical link is Up
  Interface index: 2, SNMP ifIndex: 2
  Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Speed: 100mbps
  Device flags   : Present Running
  Interface flags: SNMP-Traps
  Link type      : Full-Duplex
  Current address: 02:00:00:00:00:04, Hardware address: 02:00:00:00:00:04
  Last flapped   : Never
    Input packets : 30655 
    Output packets: 33323

  Logical interface fxp1.0 (Index 3) (SNMP ifIndex 14) 
    Flags: SNMP-Traps Encapsulation: ENET2
    Protocol inet, MTU: 1500
      Flags: Is-Primary
      Addresses, Flags: Is-Default Is-Preferred Is-Primary
        Destination: 10/8, Local: 10.0.0.4, Broadcast: 10.255.255.255
    Protocol inet6, MTU: 1500
      Flags: Is-Primary
      Addresses, Flags: Is-Preferred
        Destination: fe80::/64, Local: fe80::200:ff:fe00:4
      Addresses, Flags: Is-Default Is-Preferred Is-Primary
        Destination: fec0::/64, Local: fec0::10:0:0:4
    Protocol tnp, MTU: 1500
      Flags: Primary, Is-Primary
      Addresses
        Local: 4

show interfaces detail (Internal Ethernet)

user@host> show interfaces fxp1 detail 
Physical interface: fxp1, Enabled, Physical link is Up
  Interface index: 2, SNMP ifIndex: 2, Generation: 1
  Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Clocking: Unspecified,
  Speed: 100mbps
  Device flags   : Present Running
  Interface flags: SNMP-Traps
  Link type      : Full-Duplex
  Physical info  : Unspecified
  Hold-times     : Up 0 ms, Down 0 ms
  Current address: 02:00:00:00:00:04, Hardware address: 02:00:00:00:00:04
  Alternate link address: Unspecified
  Last flapped   : Never
  Statistics last cleared: Never
  Traffic statistics:
   Input  bytes  :              2339969
   Output bytes  :             15880707
   Input  packets:                30758
   Output packets:                33443

  Logical interface fxp1.0 (Index 3) (SNMP ifIndex 14) (Generation 2)
    Flags: SNMP-Traps Encapsulation: ENET2
    Protocol inet, MTU: 1500, Generation: 7, Route table: 1
      Flags: Is-Primary
      Addresses, Flags: Is-Default Is-Preferred Is-Primary
        Destination: 10/8, Local: 10.0.0.4, Broadcast: 10.255.255.255,
        Generation: 3
    Protocol inet6, MTU: 1500, Generation: 8, Route table: 1
      Flags: Is-Primary
      Addresses, Flags: Is-Preferred
        Destination: fe80::/64, Local: fe80::200:ff:fe00:4,
        Broadcast: Unspecified, Generation: 5
      Addresses, Flags: Is-Default Is-Preferred Is-Primary
        Destination: fec0::/64, Local: fec0::10:0:0:4, Broadcast: Unspecified,
        Generation: 7
    Protocol tnp, MTU: 1500, Generation: 9, Route table: 1
      Flags: Primary, Is-Primary
      Addresses, Flags: None
        Destination: Unspecified, Local: 4, Broadcast: Unspecified,
        Generation: 8

show interfaces extensive (internal Ethernet)

user@host> show interfaces fxp1 extensive 
Physical interface: fxp1, Enabled, Physical link is Up
  Interface index: 2, SNMP ifIndex: 2, Generation: 1
  Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Clocking: Unspecified,
  Speed: 100mbps
  Device flags   : Present Running
  Interface flags: SNMP-Traps
  Link type      : Full-Duplex
  Physical info  : Unspecified
  Hold-times     : Up 0 ms, Down 0 ms
  Current address: 02:00:00:00:00:04, Hardware address: 02:00:00:00:00:04
  Alternate link address: Unspecified
  Last flapped   : Never
  Statistics last cleared: Never
  Traffic statistics:
   Input  bytes  :              2349897
   Output bytes  :             15888605
   Input  packets:                30896
   Output packets:                33607
  Input errors:
    Errors: 0, Drops: 0, Framing errors: 0, Runts: 0, Giants: 0,
    Policed discards: 0, Resource errors: 0
  Output errors:
    Carrier transitions: 0, Errors: 0, Drops: 0, MTU errors: 0,
    Resource errors: 0

  Logical interface fxp1.0 (Index 3) (SNMP ifIndex 14) (Generation 2)
    Flags: SNMP-Traps Encapsulation: ENET2
    Protocol inet, MTU: 1500, Generation: 7, Route table: 1
      Flags: Is-Primary
      Addresses, Flags: Is-Default Is-Preferred Is-Primary
        Destination: 10/8, Local: 10.0.0.4, Broadcast: 10.255.255.255,
        Generation: 3
    Protocol inet6, MTU: 1500, Generation: 8, Route table: 1
      Flags: Is-Primary
      Addresses, Flags: Is-Preferred
        Destination: fe80::/64, Local: fe80::200:ff:fe00:4,
        Broadcast: Unspecified, Generation: 5
      Addresses, Flags: Is-Default Is-Preferred Is-Primary
        Destination: fec0::/64, Local: fec0::10:0:0:4, Broadcast: Unspecified,
        Generation: 7
    Protocol tnp, MTU: 1500, Generation: 9, Route table: 1
      Flags: Primary, Is-Primary
      Addresses, Flags: None
        Destination: Unspecified, Local: 4, Broadcast: Unspecified,
        Generation: 8
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